CLS 550 (219.372) V8-5.5L (273.960) (2007)
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Voice control
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External audio devices via AUX connection
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Video mode, with code (527) COMAND APS with single DVD drive (with navigation system)
Participating system components of the COMAND operating, display and controller unit with full equipment:
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Audio gateway control unit (includes radio receiver, radio amplifier, CAN-B interface, MOST interface and audio processor)
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Universal Portable CTEL Interface (UPCI [UHI]) control unit (telephone, SMS)
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Emergency call system control unit (N123/4), with code (530) COMAND APS USA (with navigation system)
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Navigation processor
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Voice control system (VCS [SBS]) control unit
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CD changer
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Multifunction steering wheel (MFL)
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Instrument cluster
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TV combination tuner (analog/digital) (A90/1), with code (527) COMAND APS with single DVD drive (with navigation system)
MOST
The digital components in the COMAND operating, display and controller unit are interlinked through MOST. MOST is used to transmit data (control
commands and useful information) between the various system components. In the process both control data and the actual audio signals are transmitted
(music from CD changer, voice when phoning).
Different data bus systems are installed as to some extent different data formats are used for individual components or different requirements are placed
on bit rate and security. Data bus systems:
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MOST
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CAN-B
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Controller Area Network bus, Class C (engine compartment) (CAN C)
Via MOST, data or signals are exchanged between the audio gateway control unit, the COMAND operating, display and controller unit, CD changer, the
Universal Portable CTEL Interface (UPCI [UHI] control unit and the voice control system (VCS [SBS]) control unit).
In the process both control data and the actual audio signals are transmitted (music from CD changer, voice when phoning). The COMAND operating,
display and controller unit communicates with the audio gateway control unit and the other system components via the integral MOST interface.
Interfaces
The CAN-B is used for data exchange with the instrument cluster. This is how the instrument cluster receives the audio, telephone and navigation data
for the multifunction display in the instrument cluster, as well as the time, from the COMAND operating, display and controller unit via the audio
gateway control unit.
Time synchronization between the COMAND operating, display and controller unit and the instrument cluster can also be performed via the
multifunction steering wheel.
In order to receive data for position finding, the CAN-C is linked to the CAN-B via the central gateway control unit.
The data read in from the ESP control unit are placed on the CAN-C and are available on the CAN-B via the central gateway control unit and are
therefore available to the navigation computer as well as the MOST via the audio gateway control unit.
GF82.85-P-2006TX Switch On/Off Behavior, Function